Method of and apparatus for wrapping annular objects



March 10, 1936. c. M. M cHEsNEY METHOD OF AND APPARATUS FOR WRAPPINGANNULAR OBJECTS Filed Nov. 7, 1932 5 Sheets-Sheet 1 :1 z: T- F:

5 Sheets-Sheet 2 i llllmlllll C. M. M CHESNEY Filed Nov. 7, 1932 METHODOF AND APPARATUS FOR WRAPPING ANNULAR OBJECTS March 10, 193

kw Qw March 10, 1936. MacCHESNEY METHOD OF, AND APPARATUS FOR WRAPPINGANNULAR OBJECTS Filed Nov. 7, 1932 5 Sheets-Sheet 3 iii/1276x07C/zesievMMaaCfie March 10, 1936.

c. M. MgfiCHESNEY Filed Nov. 7, 1932 5 Sheets-Sheet W I M I I I u IMarch 10, 1936. c, MacCHESNEY METHOD OF AND APPARATUS FOR WRAPPINGANNULAR OBJECTS 5 Sheets-Sheet Filed Nov. 7, 1932 IIIIII Patented Mar.10, 1936 UNITED STATES METHOD OF AND APPARATUS FOR WRAP- PING ANNULAROBJECTS Chester M. MacChesncy, Chicago, 1ll., assignor to Acme SteelCompany, Chicago, 111., a corporation of Illinois Application November7, 1932, Serial No. 641,567

29 Claims.

This invention relates to improvements in methods of and apparatus forwrapping annular objects such as coils of steel strapping or coils ofwire or the like. It is common practice to wind steel strapping and wirein coil form for shipment and it is desirable to wrap these coils andother articles of ring form with covers of paper or the like in order toprotect them from the weather and to facilitate the handling of them bythe shipper. Because of the shape of the object, great difficulty hasheretofore been encountered in wrapping articles of this form in asimple manner to provide a covering which lies in close contact with thearticle, and the principal object of the present invention is to providean improved method of wrapping according to which a covering of paper orthe like, which is preferably crinkled or otherwise made expansible, iswrapped in close contact with the coil or other annular object and heldsecurely in place. Another object of the invention is to provide animproved method of wrapping coils or other annular objects according towhich a fiat sheet of crinkled paper or other expansible material isprovided with longitudinal fold lines and then shaped into channel formhaving a longitudinal curvature so that it may be readily applied to theannular object preliminary to folding the overlapping edges over eachother and then sccuring the covering in place. Still another object ofthe invention is to provide improved apparatus for operating upon asheet of crinkled paper or other expansible material, forming it intosuitable channel shape for application to a coil or other annularobject, and then pressing it into close contact with the surface of thecoil or object in readiness for the application of a surrounding binderor other securing device. Other objects relate to various features ofthe improved method and apparatus which will appear more fullyhereinafter.

The nature of the invention will be understood from the followingspecification taken with the accompanying drawings, in which theimproved method is illustrated in connection with one form of theimproved apparatus.

In the drawings,

Fig. 1 is a top plan view of one form of the improved apparatus adaptedfor use in operating the method of the present invention, showing asheet of crinkled paper being operated upon thereby and reduced tochannel form;

Fig. 2 is a top plan view of a fragment of the crinkled composition ofpaper which is preferably employed in operating the present invention,with parts thereof broken away;

Fig. 3 is an enlarged detail section through the sheet of paper taken onthe line 33 of Fig. 2;

Fig. 4 shows a plan view of a section of the strip of paper which isused in forming the covering after it has been operated uponto provideit with longitudinal grooves or fold lines;

Fig. 5 shows a side elevation of the apparatus illustrated in Fig. 1,with parts thereof illustrated in vertical section;

Fig. 6 shows an enlarged vertical section taken on the line 6-6 of Fig.5;

Fig. 7 shows an enlarged horizontal section taken on the line I-I ofFig. 1, illustrating the folded condition of the paper after it has beenprovided with fold lines preliminary to reducing it to curved channelform;

Fig. 8 is an enlarged detail section taken on the line 8-8 of Fig. 1;

Fig. 9 is an enlarged detail section taken on the line 9--9 of Fig. 1;

Fig. 10 shows a perspective view of a section of the covering materialafter it has been reduced to curved channel form by the apparatusillustrated in Figs. 1 and 5;

Fig. 11 shows a vertical axial section through a coil of steel strappingor the like supported upon a ring and having applied thereto thechannel-shaped covering material illustrated in Fig. 10, preliminary toreceiving the annular supporting channel illustrated in the upper partof this figure; v

Fig. 12 is a sectional view taken on the line lZ-IZ of Fig. 11, showinga top plan view of the channel-shaped covering applied to the metalcoil;

Fig. 13 is a sectional view taken on the line Iii-I3 of Fig. 11, showinga bottom plan view of the channel-shaped supporting ring in which thecovered coil is mounted during the latter stages of the process ofwrapping;

Fig. 14 shows a vertical section through the covered coil andchannel-shaped supporting ring illustrated in Fig. 11 when these havebeen mounted on the wrapping device by which the edges of the coveringare overlapped and pressed into close contact with the coil;

Fig. 15 shows a front elevation of the apparatus illustrated in Fig. 14from the position illustrated by the section line l5-l5 of F18. 14;,

Fig. 16 shows a vertical section through the upper part of the wrappingdevice illustrated in Fig. 14 when a second channel-shaped ring and coilare being applied thereto;

Fig. 17 shows a vertical section through the upper portion of thewrapping device illustrated in Fig. 14 after two channel-shaped ringshaving covered coils-mounted therein have been rotated to overlap theedges of the coverings and press them into close contact with the coils,and illustratingalso the step of passing binding straps around the coilsfor binding them together; and

Fig. 18 is a perspective view of thetwo covered coils after they havebeen bound together by steel straps, portions of these wrapped coilsbeing cut away and illustrated in-section.

In Figs. 2 and 3 of the drawings there is illustrated a form of wellknown commercial covering material 20 which is preferably employed inthe practice of the present invention, although other expansible paperor covering material may be employed. The material illustrated is knownas crinkled paper and it comprises two outer layers of paper 20 whichare cemented to an innerlayer 23 of burlap by means of asphalt 20 or thelike which adheres to the paper and may more or less impregnate theburlap. The composition paper thus formed is compressed longitudinallyand provided with a plurality of transverse wrinkles or corrugations 20which give it a rough and crinkled form and render it expansible in alongitudinal direction when suitable pressure is exerted thereon. Anyportion of the width of this paper may be expanded longitudinallyindependent of the remaining portions and it is well adapted to retainthe expanded form into which it is put, so that it lends itself to theformation of a channel-shaped covering having a longitudinal curvatureadapted to conv form to the curvature of a circular coil of steel 2s andso strapping or other annular object which is to be wrapped.

The preliminary treatment of the covering material 20 is carried out inapparatus having the form illustrated in Figs. 1, 5 and 6, comprising atable 2| supported by legs 22 which rest upon a floor or other support23 and which are connected by longitudinal frame members 24. A longlength of the wrapping material 20 is wound on a drum, as shown at 25,and this drum has trunnions 26 which are journaled in bearings 21carried by the frame members 24 so that the wrapping material may beprogressively withdrawn from the drum as it is used. As the paper iswithdrawn from the drum, the first step is to provide it withlongitudinal grooves or fold lines 28, as shown in Fig. 4, and these areformed by passing the paper or other wrapping material between a pair ofrolls 23 and 30. The roll 29 is provided with a series of spaced annulargrooves 29" and as the sheet of material 20 passes between the rolls,portions thereof are forced into these grooves by the annular V-shapedribs or dies 30 which are carried by the roll 30, as illustrated in Fig.6, thus compressing the wrapping material at the points where these diesand.

grooves are located and providing it with longitudinal ribs or foldlines of V-shaped cross-section which project slightly from the plane ofthe material. The ends of the shafts of the rolls are journaled inbearing blocks 3| mounted upon the floor 23 and these shafts are gearedtogether at one end by gears 32. At their other ends, one of theseshafts is provided with a pulley 33 which may be driven from a motor bya belt or the like so that the rolls 29 and 30 are positively driven towithdraw the paper from the drum and provide the longitudinal fold lines28 therein,

them as the operation continues, the

After leaving the rolls 29 and 30, the paper passes upwardly and througha slot 35 which extends transversely through the end portion of thetable 2|. Before being passed through this slot at the beginning of theoperation, the paper is folded over, in the ,manner shown in Fig. 7,along one of the two intermediate fold lines and pap s automaticallyfolded as it passes upwardly to the slot 35 through the action of afolding plate 36 which is secured to the table and extends downwardlytherefrom along the outer edge of the slot. As the paper passes upwardlyand through the slot 35, it is carried laterallyto some extent and thetable 2| is offset laterally at one end, as shown in Fig. 1, in order toposition the slot 35 at a point where it will receive the paper withoutexerting undue strain thereon other than that required to fold it in themanner shown in Fig. 7. After passing through the slot 35, the paperpasses over the surface of the table and is carried into a chute 31,secured to the upper side of the table and adapted to fold the paperinto channel form and also to give it a curvature longitudinally. Beforereaching this chute, the paper is engaged by a plate 38 which holds thatportion of the paper which lies between the two intermediate fold linesin close contact with the upper surface of the table. This plate iscarried by a bracket 39 of U-shaped form which extends over the sidewall of the channel which the paper has then formed and is secured tothe surface of the table by screws engaging the plate 40. The channel3'! has a bottom wall 3! and vertical parallel side walls 31 which areoutwardly flared at their ends as shown at 31 in order to guide thepaper into the channel. This chute 31 is curved in semicircular form atone end as shown at 31 the curvature being in a horizontal planeparallel to the upper surface of the table, and a portion of this curvedpart of the channel is occupied by a guide plate 42 of angularcross-section which has a horizontal flange 42 extending parallel to thebottom wall 3'! of the channel and an upwardly extending flange 42 whichextends in parallel relation with and spaced from the outer wall 31 ofthe channel. These guide plates 42 are carried by brackets 43 which aresecured to the outer walls of the channel and which have their upperportions formed as rectangular loops 43 in order to permit the outerupstanding flange of the covering strip 20 to be folded inwardly as thestrip is caused to assume a curved form. The forward extremity of theflange 42 is curved inwardly in order to direct the covering materialbetween this flange and the adjacent outer wall 3'! of the channel.

As the strip of covering material 20 is drawn over the surface of thetable 2| by the mechanism hereinafter described, the side portionsthereof are directed upwardly about the intermediate fold lines 28, asshown in Fig. 8, and the paper begins its travel through the chute 31 inthis channel-shaped form. The paper will previously have been providedwith a fold around the innermost fold line 28 and the angle-shaped guideplate 42 will serve to accentuate the fold around the outermost foldline 28 when the paper reaches the curved portion of the chute. Thebottom section 20 of the covering material lies in a horizontal positionon the bottom wall of the channel beneath the flange 42 of the guideplate and the section 20, next adjacent to extends vertically upwardbetween the outer wall of the channel and the flange -42*. n the innerside of the channel, the section 2ll'of the covering strip extendsvertically upward adjacent the inner wall of the channel. At the stageshown in Fig. 8, the covering material is not bent around the two outerfold lines 28 so that the edge flaps or sections 25 and 2t of thecovering material continue to extend vertically upward. As the "coveringmaterial 20 passes around the curved portion 31 of the channel, theouter portion 25 thereof, which is confined between the flange 42 andthe outer wall of the channel, is expanded longitudinally because it isrequired to pass along a path of greater length than that traveled bythe section 2|) of the covering material which lies adjacent to theinner vertical wall of the channel. The covering material thus graduallyassumes a longitudinal curvature and as the section 25 thereof isexpanded, the outer flap or edge section 25 is automatically turnedinwardly as shown at 44 in Fig. 9, due to the fact that this flap isunobstructed and is required to expand only along the lower edge thereofwhere it is connected to the section 25. The guide plate 42 extendsthrough an arc of slightly more than ninety degrees and adjacent therear extremity thereof, the outer vertical section 25 of the coveringmaterial is operated upon by a pair of rolls 45 which are mounted onvertical shafts 45 and which are provided with outer serrated orroughened surfaces 45 for engagement with the covering material. Theshafts 45 are journaled in a bearing block 41 and are connected 4 to bedriven in unison by gears 48 so that when to stretch and elongate theouter vertical section 25 of the covering material by drawing it aroundthe vertical flange 42 of the guide plate but also to draw the paperthrough the chute over the upper surface of the table.- As the paperemerges from the mouth of the chute 31, it has assumed a longitudinalcurvature and has a channel form substantially like that illustrated inFig. 9, so that sections thereof may be cut off in the desired lengthsfor application to coils of steel strapping or other annular objectswhich are to be covered thereby. The form of this channel-shapedcovering having a longitudinal curvature is illustrated particularly inFig. 10.

In Fig. 11, a substantially circular section of the channel-shapedcovering material is shown applied to a circular coil 50 of steelstrapping or the like. After this coil is wound, the layers thereof aresecured together and it is retained in its circular form by bindingwires which are passed around the coil transversely-as shown in Fig. 12with their ends twisted together or otherwise secured to maintain themin place. Before applying the channel-shaped covering material to thecoil 55, it is placed upon a supporting ring 52, as shown in Fig. 11,with the intermediate portion of one side of the coil resting upon thecomparatively narrow edge of the ring which may be secured to a table orother support 53. The curved channel-shaped covering strip 20,

having the form shown in Fig. 10, is then slipped down over the coil 50,as shown in Fig. 11, with the end portion thereof overlapping asillustrated at 54 in Fig. 12. The channel-shaped form of the coveringstrip then causes it to lie in close contact with three annular surfacesof the coil 50 and the edge sections or flaps 20 and 2|] of the coveringstrip are then adapted to be overlapped against the surface 50 of thecoil which rests upon the supporting ring 52.

border to effect the folding of the flaps 25 and 20 over the surface 5|)of the coil and to .permit the binding of the wrapping about the centerwith a hub 51 and having adjacent its outer ends a pair of annulartransversely extending flanges 55 and 59 which form an intermediatechannel 50 adapted to receive the coil 50 having applied thereto thechannel-shaped cover as shown in Figs. 11 and 12. The annular flanges 58and 59 diverge slightly away from the plate 55 and they have their outeredges turned sharply away from each other so that the channel 55 isadapted to permit the ready insertion of the covered coil 55. Thecarrier 55 is further provided with a plurality of radially extendingslots 5| which are formed in the disk 55 and which also extend throughthe flanges 58 and 59. These slots are enlarged at their outer ends asshown at 5!, beginning at a point adjacent the flange 55, and theyextend inwardly to points slightly beyond the inner margin of the flange55, as shown in Fig.'13. In this embodiment, three slots 5| are providedand they are adapted to permit the arrangement of steel straps or otherbinders around the covered coil after the flaps 2|) and 25 have beenturned inwardly into close engagement with the face 50 of the coil.

After the cover has been placed on the coil 55 while the coil ispositioned on the supporting ring 52, the carrier 55 is placed inposition over the covered coil and then the carrier containing the coilis picked up and the hub 51 is placed upon a stub shaft 53 whichprojects outwardly from a pedestal 54 secured to the floor or othersupport. The pedestal 54 has a block 54 at its upper end in which theend of the shaft 53 is mounted and secured by a pin 55, and the shaft 53has a slight upward inclination away from the block 54 so that thecarrier 55 is automatically retained in position on the shaft after beinapplied thereto. The shaft 53 has secured thereon adjacent the block 54a disk 55 which is provided at its center with an enlarged hub portion55 adapted to be secured either to the shaft 53 or to the block 54 inorder to prevent rotation of the disk 55. This disk is provided withthree radially .extending slots 51 which are adapted to register withslots 5| formed in the disk 55 of thecarrier when the carrier is inposition on the shaft 53. A plurality of brackets 55 are secured to theouter edge of the disk 55 and extend therefrom parallel to the shaft 53.At their outer ends, these brackets are provided with outwardly turnedflanges 55 and each flange carries a blade which is pivotally mountedthereon by a rivet 1| so that the blades may be turned to extendradially inward as shown in Fig. 15 or turned outwardly as shown bydotted lines at 12 to permit the insertion and withdrawal of the carrier55. The blades 10 are preferably formed of spring steel or the like andthey act as wipers to bear against the flanges 25 and of the channel- 526' and 20 extend outwardly as shown by dotted lines in Fig. 14. Theoperator then bends these flanges inwardly and turns the blades 16 tooverlie the flanges so that they are held in engagement with the face56' of the coil as shown by full lines in Figs. 14 and The carrier 55 isthen rotated on the shaft 63 to cause the blades 10 to wipe over thesurface of the outermost flange of the coil covering until these flangeshave been pressed into close engagement with the coil 15 throughout thecircumference of the coil. The

covered coil is then in readiness to receive the binders which retainthe covering in close contact with the coil and these binders may belooped around the coil by passing them through the slots 6| and 61.

It is ordinarily desirable to bind more than one coil at a time and thismay preferably be done in the manner illustrated in Figs. 16, 17 and 18.In Fig. 16, one covered coil is shown having its covering applied inclose contact by the action of the blades 10 and, when this has beenaccomplished, another carrier 55 is placed on the shaft 63 in thereverse position, that is, with the projecting flanges 20 and 2|! of thecovering extending inwardly toward the disk 66.

These flanges on this coil are then bent into contact with the innerface of the coil and the carrier 55 is pushed inwardly until theseoverlapped flanges of the covering bear against the outer faces of theplate 10. The carrier 55 is then swung around on the shaft 63 until theflanges 20 and 26 of the covering of the outer coil are pressed at allpoints into close contact with the coil, as shown in Fig. 17. The twocoils are then bound together by flexible binding straps 13 or the likewhich are withdrawn from drums I4 arranged to revolve on shafts 15extending at right angles to the shaft 63. A suitable length of theflexible binder is withdrawn from each drum or coil I4 and is loopedaround the two covered coils by passing it through one of the slots 67in the disk 66 and thence through two of the slots 6t in the carriersand 55 which will have been rotated to bring 50 the slots 6| intoalignment with each other. The

steel strapping or,other flexible binder may then be looped around thetwo covered coils as shown in Fig. 17 after which it is drawn tauteither manually or by the use of a suitable stretching 55 tool. when thestrap has been drawn taut, the

overlapping end portions thereof are united, preferably by means of aseal 11, and the outer portion of the strap is then cut off from thesource of supply adjacent to the seal, which may be of the formdescribed and claimed in the United States patent of Ralph H. Norton No.1,260,016, dated March 19, 1918. When the binders have been drawn. taut,secured by seals, and cut off from the supply coil 14, the blades C5 10are turned outwardly to positions such as that shown by dotted lines 12in Fig. 15, thereby permitting the two bound and wrapped coils to beremoved from the shaft 63 along with their carriers 55 and 55. Thesecarriers may then be readily removed from opposite sides of the doublecoil which then has the finished appearance shown in Fig. 18.

Although one example of the improved method and one form of the improvedapparatus have been illustrated and described in connection with thedrawings, it will be understood that the apparatus may-be, constructedin various forms and that the method may be practiced in various wayscoming within the scope of the appended I claim: a

1. The method of preparing a wrapping for an annular object whichconsists in taking a strip of expansible material and forming it byrelative expansion of its different parts into a curved channel adaptedto be subsequently fltted over the object.

2. The method of preparing a wrapping for an annular object whichconsists in taking a strip of expansible material and by relativeexpansion of its parts forming it prior to application to said objectinto a channel having a longitudinal curvature anda longitudinal openinggirected transversely to the plane of its curvaure.

3. The method of preparing a wrapping for an object which consists incutting a strip of material and folding it transversely to foim achannel comprising inner and outer curved portions connected at one sideand open along the other side to receive the object.

4. The method of preparing a wrapping for an annular object whichconsists in folding a strip of expansible material along longitudinalfold lines, and expanding parts of said material prior to application tosaid object longitudinally of the strip to form an open channel having alongitudinal curvature.

5. The method of preparing a wrapping for an annular object whichconsists in folding a strip of expansible material along longitudinalfold lines, and expanding parts of said material longitudinally of thestrip to form a curved channel having its opening along the lateralside' of the curve.

6. The method of preparing a wrapping for an annular object whichconsists in passing a strip of expansible .material endwise through diesadapted to fold said strip about longitudinal lines and to expand partsof said strip longitudinally, thereby forming a channel having alongitudinal curvature.

7. The method of preparing a cover for an annular object which consistsin providing a strip of expansible material with parallel longitudinalfold lines, and then folding said material along said lines andexpanding portions thereof longitudinally to form a curved channeladapted to be subsequently applied to said object.

8. The method of preparing a cover for an annular object which consistsin providing a strip of expansible material with parallel longitudinalfold lines, and then folding said material along said lines andexpanding portions thereof longitudinally to form a curved channelhaving flaps along its edges adapted to overlap when the cover hasbeenplaced on the object.

9. The method of wrapping an annular object which consists in preparinga channel-shaped cover having a longitudinal curvature and alongitudinal opening directed transversely to the plane of curvature,and then passing the object sidewise into engagement with said coverthrough said opening.

10. The method of wrapping an annular object which consists inpreparingachannel-shaped cover having a longitudinal curvature and alongitudinal opening directed transversely to the plane of curvature,then passing the object sidewise into engagement with said cover throughsaid opening, and then securing binders transversely about said cover.

11. The method of wrapping an annular object which consists in preparinga channel-shaped covering having a longitudinal curvature and flapsalong its opening adapted to overlap on one side of said object, thenpassing said channelshaped cover into engagement with an annular object,then pressing said flaps into overlapping relation, and then securingsaid flaps in said overlapped relation.

12. The method of wrapping an annular object which consists in preparinga channelshaped covering having a longitudinal curvature and flaps alongits opening adapted to overlap on one lateral side of said object, thenpassing said channel-shaped cover into engagement with an annularobject, then pressing said flaps into overlapping relation, thensecuring said flaps in said overlapped relation, and then securingflexible binders around said cover to hold said flaps in said overlappedrelation.

13. The method of wrapping an annular object which consists in folding astrip of expansible material about longitudinal fold lines and expandingsaid material to form a curved channel, then placing said object in saidchannel, and then securing flexible binders about said cover and saidobject.

14. The method of wrapping an annular object which consists in folding astrip of expansible material about longitudinal fold lines and expandingparts of said material longitudinally to form a curved channel havingflaps along its opening adapted to overlap, then placing a section ofsaid channel-shaped material over said object with the end portionsthereof overlapping, then pressing said flaps into overlapping relationalong one side of said object, and then securing said flaps in saidoverlapped relationship.

15. The method of wrapping an annular object which consists in folding astrip of expansible material about longitudinal fold lines and expandingparts of said material longitudinally to form a curved channel havingflaps along its opening adapted to overlap, then placing a section ofsaid channel-shaped material over said object with the end portionsthereof overlapping, then pressing said flaps into overlapping relationalong one side of said object, and then passing flexible binders aroundsaid material and said object to hold said flaps in said overlappedrelationship.

16. The method of wrapping annular objects which consists in forminglongitudinally curved channel-shaped coverings having their openingsalong the sides of the curves and having flaps along said openingsadapted to overlap, then placing said coverings over said objects, thenoverlapping said flaps on said coverings with the flaps on adjacentcoverings disposed adjacent each other, and then securing the coveredobjects together by surrounding binders.

1'7. The method of wrapping an annular object which consists inproviding a strip of expansible material with longitudinal parallel foldlines, then bending said material about said fold lines and expandingparts thereof longitudinally to form a channelhaving a side Wall withtwo curved walls extending at right angles thereto and flaps extendingalong the edges of said curved walls, then placing said channel-shapedcovering over said annular object, then overlapping said flaps andpressing them into engagement with one side of said object, and thensecuring said flaps in said overlapped relationship.

18. The combination in apparatus for wrapping an annular object, ofmeans for forming 19. The combination in apparatus for wrapping anannular object, of a pair of rolls having a part adapted to form a pairof longitudinal fold lines in a strip of wrapping material passingbetween them, die plates arranged in the form of a channel having alongitudinal curvature, and means for drawing said wrapping materialthrough said die plates to fold it aboutsaid fold lines and elongatecertain parts thereof, thereby providing a channel-shaped coveringhaving a longitudinal curvature.

20. The combination in apparatus for wrapping an annular object, of aseries of plates forming a channel having a longitudinal curvaturecorresponding to the curvature of said object, and means for moving astrip of wrapping material through said plates whereby said plates foldsaid material longitudinally and expand portions thereof to form achannel-shaped covering having a longitudinal curvature.

21. The combination in apparatus for wrapping an annular object, of anannular channel-shaped carrier adapted to receive said object with achannel-shaped covering having a longitudinal curvature applied thereto,and means for supporting said carrier and permitting rotation thereof. I

22. The combination in apparatus for wrapping an annular object, of achannel-shaped carrier adapted to receive said object with achannel-shaped covering having a longitudinal curvature applied thereto,means for supporting said carrier and permitting rotation thereof, andstationary means for pressing parts of said covering into engagementwith said object during the rotation of said carrier.

23. The combination in apparatus for wrapping an annular object, of acarrier having an annular channel adapted to receive said object with achannel-shaped covering applied thereto and open along one side of saidobject, a support upon which said carrier may be located, and aplurality of blades carried by said support and adapted to engage saidcovering to press it into engagement with said object during itsrotation.

24. The combination in apparatus for wrapping an annular object, of acarrier adapted to receive said object with a channel-shaped coveringapplied thereto with projecting portions of said covering adapted tooverlap on one side of said obj ect, a support, a disk carried by saidsupport, and means for mounting and permitting rotation of said carrieradjacent said disk, said disk and said carrier being provided withradially extending slots to permit the passage of binders around saidcovering and said object.

25. The combination in apparatus for wrapping an annular object, of acarrier adapted to receive said object with a channel-shaped coveringapplied thereto with projecting portions of said covering adapted tooverlap on one side of said object, a support, a disk carried by saidsupport, means for mounting and permitting rotation of said carrieradjacent said disk, said disk and said carrier being provided withradially extending slots to permit the passage of binders around saidcovering and said object, and means carried by said disk for compressingthe edges of said covering into overlappi g relationship adjacent oneside 01' said object.

28. The combination in apparatus for wrapping an annular object, of acarrier adapted to receive said object with a channel-shaped coveringapplied thereto with projecting portions of said covering-adapted tooverlap on one side 01' said object, a support, a disk carried by saidsupport, means for mounting and permitting.ro-

ject which consists in preparing a channel shaped cover of expansiblematerial having a longitudinal curvature and a longitudinal openingdirected transversely to the plane of curvature, and then passing theobject sidewise into Engagement with said cover through said open- 5 28.The method of wrapping an annular object which consists in preparing achannelshaped cover 0! expansible material having a longitudinalcurvature and a longitudinal open- 10 ing in its lateral side directedtransversely to the plane of curvature, and then the object sidewiseinto engagement with said cover through said opening. I

29. The method of wrapping an annular ob- 1s ject which consists infolding and eflecting relative expansion of difl'erent parts of a sheetof expansible material to form a channel-shaped! cover having alongitudinal curvature and a longitudinal opening directed transverselyto the. plane of curvature, and then passing the annular object sidewiseinto engagement with said cover through said opening.

CHESTER M. MAOCHESNEY. 25

